Compilation: Softer and Gentler Metal/Rock

Not necessarily peaceful or happy, but softer and gentler in sound nonetheless.

Notes:

Covers

Apocalyptica

3-4 classically trained cellists who cover metal songs and write their own also produce beautiful instrumental tracks.

Blind Guardian

Their softer songs have a more medieval-folksy feel to them, and wouldn't be out of place in some tavern in a European-based fantasy.

Breaking Benjamin

Softer and less angsty than their usual fare, but could still be considered 'hard'.

Lighter in instruments, but retains a fairly dark tone.

Nightwish
Oceans of Slumber
Three Days Grace

Unsure if these count as soft and gentle but they're (I think) more palatable to non-rock fans and have a generally more uplifting vibe.

Within Temptation
X Japan

Misc.